125001256 - 2110D20 DIFFERENTIAL INNER CASE, REMOVED - DISMANTLE AND REBUILD, CHECK PLANET AND DIFFERENTIAL GEARS

Removing ( Refitting ) Position the differential internal housing in the vice fitted with protective jaws.1. Remove the front bearing (1a) using tools (1b) and (1c).2. Remove the speedometer drive gear.

	Name	Country
1b	Extractor	1.840.005.200

	Name	Country
1c	Clamps	1.840.005.103

1. Remove the rear bearing (1a) using tools (1b) and (1c).

	Name	Country
1b	Extractor	1.840.005.200

	Name	Country
1c	Clamps	1.840.005.103

1. Undo the bolts (1a) and remove the ring gear (1b). 1. Separate the halves of the differential internal housing using a suitable drift.2. Remove the adjustment shim.3. Remove the bearing.4. Remove the differential gear. 1. Remove the planet carrier shaft retaining pin using a suitable drift. 1. Remove the planet carrier shaft using a suitable drift.2. Remove the planet gears (2a) and thrust washers (2b).3. Remove the differential gear.4. Remove the bearing.5. Remove the adjustment shim. Refitting ( Removing ) Fit the scraper ring in the front half of the differential housing.Fit the bearing.Fit the differential gear.Fit the planet gears and thrust washers and fix them with the planet carrier shaft to be fitted using a suitable drift.Fit the planet carrier shaft retaining pin using a suitable drift.1. Position the front half of the differential housing using a special gauge.2. Fit the tool on the front half of the differential housing.

	Name	Country
2	Gauge	1.820.125.000

3. Position a magnetic base (3a), complete with dial gauge (3b), with the pointer in contact with the tool and a pre-loading of 1 mm.Rotate the tool and move it axially, checking that the end float is within the recommended values.

	Measurement		Value
-	End float (-)		0.2

If the values measured do not correspond with the figures given, replace the scraper ring with a suitably sized one.Rotate the tool through one complete revolution and check that the variation in the end float is within the recommended values.

	Measurement		Value
-	End float variation (-)		0.1

Fit the differential gear.Fit the bearing.Fit the adjustment shim.Fit the rear half of the housing.1. Fit the ring gear (1a) and fix it temporarily using the bolts (1b).2. Fit the tool A on the rear half of the differential housing.

	Name	Country
2	Gauge	1.820.125.000

3. Position a magnetic base (3a), complete with dial gauge (3b), with the pointer in contact with the tool and a pre-loading of 1 mm.Rotate the tool and move it axially, checking that the end float is within the recommended values.

	Measurement		Value
-	End float (-)		0.2

If the values measured do not correspond with the figures given, replace the scraper ring with a suitably sized one.Rotate the tool through one complete revolution and check that the variation in the end float is within the recommended values.

	Measurement		Value
-	End float variation (-)		0.1

Tighten the differential crown wheel bolts to the specified torque.

	Fastening	Component	Ø	Value(daNm)
-	Bolt	DIFF CROWN WHEEL	M10	7.7 - 9.5

Fit the speedometer drive gear.1. Fit the front bearing (1a), using a hydraulic press, a suitable plate (1b) and the fitting tool (1c).

	Name	Country
1c	Tool for Extracting/Fitting	1.870.658.000

1. Fit the rear bearing (1a), using a hydraulic press, a suitable plate (1b) and the fitting tool (1c).

	Name	Country
1c	Tool for Extracting/Fitting	1.870.658.000